JPH0565010U - LED aviation obstruction light - Google Patents

Abstract

(57) [Summary] [Construction] A conical head-cut heat sink 2 having fins 2a formed on the inner surface is attached to one large-diameter flange 1a side of a pedestal 1 having both ends in a flange shape. , A plurality of substrates 4 on which a plurality of LEDs 4a are mounted in a row at an intersection angle α formed by an acute angle with the bus bar 3 of the heat sink 2, are mounted by screws 5, and a transparent cover 6 is further provided on the outer periphery of the large-diameter flange. It is attached to 1a. [Effects] With the above-described configuration, in an LED-type aviation obstruction light, even if a certain substrate on which an LED is mounted is broken, the luminous intensity in the direction of the substrate does not decrease, and the substrate has a uniform temperature. Can hold.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of an aviation obstruction light which is obliged to be attached to a high-rise building or the like.

[0002]

[Prior Art]

 FIG. 4 is an exploded perspective view of a conventional LED-type aviation obstruction light a. In FIG. 4, a conical head-cut heat sink c having fins c1 formed on the inner surface is attached to one side of the large-diameter flange b1 of a pedestal b having both ends, and the heat sink c is attached. A plurality of substrates d on which a plurality of LEDs d1 are mounted in a row along a bus bar c2 of c are mounted by screws (not shown), and a transparent cover e is mounted on the outer periphery of the large-diameter flange b1.

The LED-type aviation obstruction light a is attached to a building or the like through an attachment hole b2 'formed in a flange b2 at the other end of the pedestal b. Since the conventional LED-type aviation obstruction light a is configured as described above, the luminous intensity emitted by the plurality of LEDs d1 of the substrate d shown in FIG. 5 is shown in FIG. 6 as a plane azimuth. ..

In FIG. 6, the vertical axis y represents the luminous intensity and the horizontal axis x represents the planar azimuth angle. That is, the luminous intensity at the azimuth of D1 in FIG. 5 is y1, the luminous intensity at the azimuth of D2 in FIG. 5 is y2, and the luminous intensity at the azimuth of D3 in FIG. 5 is y3. That is, the luminous intensity in the azimuth D1 direction is shared by the substrate d. Therefore, when the board d is disconnected, the power supply to all the LEDs d1 on the board d which are wired in parallel is cut off and all the LEDs d1 on the board d are turned off. That is, when the LED type aviation obstruction light a is viewed from the direction of D2, the LED aviation obstruction light a appears darker.

FIG. 7A is a vertical sectional view of a mounting portion of a board d of a conventional LED-type aviation obstruction light a. In FIG. 7 (A), the board d is screwed to the heat sink c with screws c3 sandwiching a rubber g having good thermal conductivity.

The relationship between the screwing force f of the screw c3 and the heat radiation amount of the board d to the heat sink c is as shown in FIG. 7 (B). In FIG. 7B, the vertical axis h represents the heat radiation amount, and the horizontal axis f represents the screwing force f. That is, the heat radiation amount h increases up to the screwing force f1 almost in proportion to the screwing force f, but after the screwing force reaches f1, the heat radiation amount h does not increase beyond h1 and the heat radiation amount h1 is constant. Become.

That is, as described above, since there is a relationship between the screwing force f of the substrate d to the heat sink c and the heat radiation amount h, the substrate d is screwed to the heat sink c with a certain interval, The substrate d in the vicinity of c3 or c3 'has a good screwing force f and a large amount of heat radiation. Therefore, at p2 corresponding to the screw c3 and p1 corresponding to the screw c3', the temperature drops to the temperature j1, but the screws c3 and c3 '. The screwing force f becomes weaker at the position p3 in the middle of ′, so that the heat radiation amount h is smaller and the temperature j2 is higher as described above (see FIGS. 8A and 8B).

In FIG. 8B, the vertical axis p indicates the location on the substrate d, and the horizontal axis j indicates the temperature. That is, ideally, it is desirable that the heat generated by the LEDs d1 on the substrate d is evenly conducted to the heat sink c and has a uniform low temperature without variation, but in the conventional example, it is shown in FIG. As described above, the temperature on the substrate d is not uniform.

[0009]

[Problems to be solved by the device]

 In view of the above points, the present invention provides an LED-type aviation obstruction light, in which even if a substrate on which an LED is mounted is broken, the luminosity of the substrate does not decrease, and the substrate has a uniform temperature. It is an object to provide an LED-type aviation obstruction light having a structure that can be held.

[0010]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides an LED-type aviation obstruction light in which a plurality of substrates in which a plurality of LEDs are mounted in a row are mounted on the surface of a conical head-cut heat sink. A structure was adopted in which a plurality of LEDs were mounted in rows and mounted at an intersecting angle consisting of an acute angle with the generatrix of the conical head-sink heat sink.

[0011]

[Action]

 In the LED-type aviation obstruction light according to the present invention, a substrate having a plurality of LEDs mounted in a row on a surface of a heat sink having a conical head cut shape is provided with a heat sink having a conical head cut shape. Since the board is installed with an inclination angle to the busbar, even if the board is broken, the other boards on both sides are installed diagonally on the heat sink. Does not decrease.

[0012] Further, since the substrate is screwed onto the surface of the heat sink obliquely, the screwing force is evenly transmitted to the substrate, and as a result, the temperature on the substrate becomes uniform.

[0013]

【Example】

 FIG. 1 is a perspective view of an LED aviation obstruction light A according to an embodiment of the present invention. In FIG. 1, a conical head-cut heat sink 2 having fins 2a formed on its inner surface is attached to one large-diameter flange 1a side of a pedestal 1 having both ends in a flange shape. A plurality of substrates 4 having a plurality of LEDs 4a mounted in a row with a crossing angle α that is an acute angle with the busbar 3 of 2 are mounted with screws 5, and a transparent cover 6 is further provided on the outer periphery of the large-diameter flange. It is attached to 1a.

The LED-type aviation obstruction light A is attached to a building or the like through an attachment hole 1b 'formed in a flange 1b at the other end of the pedestal 1. Since the LED-type aviation obstruction light A of the embodiment according to the present invention is configured as described above, each of the light emitted by the plurality of LEDs 4a of the substrate 4 shown in the plan view of FIG. The luminosity in the directions D1 ', D2' and D3 'are Y1, Y2 and Y3 as shown in FIG. 2 (B).

That is, comparing the curve Y ′ of the luminous intensity with respect to this planar orientation with the curve y ′ of the conventional example in FIG. 6, the curve y ′ is extremely sharp with respect to the planar orientation, and the curve Y ′ is broad. Is. In other words, in other words, the luminous intensity of the LED type aviation obstruction light A of the embodiment according to the present invention with respect to the plane direction is extremely broad, so that the light emission by the plurality of LEDs 4a of the substrates 4 adjacent to each other overlap each other to illuminate the entire circumference. There is.

Therefore, even if all the LEDs 4a on a certain substrate 4 are turned off, the luminous intensity in the direction of the substrate 4 has little effect. In FIG. 3 (A), the center line 4b of the substrate 4 intersects with the generatrix 3 passing through a point 4b 'that intersects the lower edge of the heat sink 2 at a crossing angle α. That is, the board 4 is curvedly attached to the heat sink 2 with the screw 5 along the line where the imaginary plane 7 passing through the center line 4b of the board 4 and the surface of the heat sink 2 intersect. Therefore, due to the curvature of the substrate 4, even at an intermediate point P3 between the screws 51 and 52 in FIG.

That is, in FIG. 3C, if the vertical axis P indicates the location on the substrate 4 and the horizontal axis J indicates the temperature, the temperature is J1 and the screw 52 is at the position P1 where the screw 51 is located. At position P2 the temperature is J1. The temperature at the intermediate point P3 is J2, which is a gentle curve as compared with the conventional example shown in FIG. In other words, due to the curvature of the board 4, even at the midpoint of the screw 5, the heat is relatively evenly pressed onto the surface of the heat sink 2. Therefore, the heat generated by the LEDs 4a is evenly escaped to the surface of the heat sink 2 and maintained at an even lower temperature. it can.

[0018]

[Effect of the device]

 Since the present invention is configured as described above, in an LED-type aviation obstruction light, even when a certain substrate on which an LED is mounted is broken, the luminous intensity in the direction of the substrate is not reduced and the substrate is kept at a uniform temperature. It features an LED-type aviation obstruction light that can be held.

[Brief description of drawings]

FIG. 1 is a perspective view of an LED-type aviation obstruction light according to the present invention.

FIG. 2A is a plan view of the same. FIG. 3B is a diagram showing the relationship between the azimuth and the luminous intensity.

FIG. 3A is a perspective view in which a substrate is also attached to a heat sink. (B) is a vertical sectional view in which the substrate is also attached to the heat sink. (C) is a diagram showing the relationship between the position of the substrate and the temperature.

FIG. 4 is an exploded perspective view of a conventional example.

FIG. 5 is a plan view of the same.

FIG. 6 is a diagram showing a relationship between azimuth and luminous intensity.

FIG. 7A is a vertical cross-sectional view in which a substrate is also attached to a heat sink. FIG. 6B is a diagram showing the relationship between the screwing force of the substrate and the heat radiation amount of the substrate.

FIG. 8A is a vertical sectional view in which a substrate is also attached to a heat sink. (B) is a diagram showing the relationship between the position of the substrate and the temperature.

[Explanation of symbols]

 A LED-type aviation obstruction light 1 base 2 heat sink 2a fins 3 bus bar 4 board 4a LED 5 screw 6 cover

Claims (1)

[Scope of utility model registration request] 1. An LED-type aviation obstruction light in which a plurality of substrates, each having a plurality of LEDs mounted in a row, are mounted on the surface of a heat sink having a truncated conical shape, wherein the plurality of LEDs are mounted in a row. The LED is characterized in that the substrate is mounted at an intersection angle of an acute angle with the generatrix of the conical head-cut heat sink.
Aviation obstruction lights.